Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
dung chung » dung cong, dung ung, dung trung
hoc chieu » hoc thieu, ho chieu, hoc hien
chung ban » chung bat, chung han, chung nhan
trung va » truong va, trang va, trung ha
ban than » ban thanh, van thanh, ban hang
than cau » toan cau, phan cau, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh ((trung va) or (truong dai)) dung chung ban than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((trung va) OR (truong dai)) dung chung ban than cau*.